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Round|Natural|IGI

1.33ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 685580930

Shape and cutting style on the report: Round brilliant

Certificate IGI 685580930

Diamond specifications and retailer prices

From $1,853 SGD
As of November 6, 2026
Save $2,297 SGD (55%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $5,879 SGD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.33ct natural round diamond

This 1.33ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 685580930. Listed at 25 retailers as of November 2, 2026, with a 124% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.33
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 685580930
Dimensions6.96 × 6.93 × 4.40 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
6.96 mm6.93 mm1.33 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 685580930
Side View
Table 58.0%Crown 36.4°Girdle: ThickPavilion 41.1°Culet: NoneDepth 63.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $1,853 SGD|Low: $1,853 SGD|High: $4,934 SGD|Avg: $2,741 SGD|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 1$1,853 SGD
Retailer 3$2,114 SGD
Retailer 12$2,160 SGD
Retailer 13$2,197 SGD
Retailer 4$2,369 SGD
Retailer 11$2,433 SGD
Retailer 2$2,455 SGD
Retailer 5$2,587 SGD
Retailer 6$2,602 SGD
Retailer 7$2,749 SGD
Retailer 8$2,892 SGD
Retailer 9$3,151 SGD
Retailer 10$4,150 SGD

26 data points across 13 retailers

25 retailers$1,853 SGD to $4,150 SGD

A
Cheapest Retailer
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$1,853 SGD
Retailer 2
-
$2,114 SGD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$2,160 SGD
View
Retailer 4
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$2,281 SGD
View
Price last confirmed 12 days ago
Retailer 5
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$2,369 SGD
View
Price last confirmed 8 days ago
Retailer 6
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$2,369 SGD
View
Price last confirmed 15 days ago
A
Retailer 7
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$2,369 SGD
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Retailer 8
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$2,386 SGD
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Price last confirmed 12 days ago
A
Retailer 9
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$2,433 SGD
View
Retailer 10
-
$2,455 SGD
View
Price last confirmed 11 days ago
A
Retailer 11
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$2,479 SGD
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A
Retailer 12
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$2,602 SGD
View
Retailer 13
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$2,694 SGD
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Price last confirmed 29 days ago
Retailer 14
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$2,694 SGD
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Price last confirmed 25 days ago
A
Retailer 15
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$2,749 SGD
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Retailer 16
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$2,813 SGD
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Price last confirmed 50 days ago
A
Retailer 17
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$2,892 SGD
View
Retailer 18
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$3,109 SGD
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Price last confirmed 33 days ago
A
Retailer 19
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$3,151 SGD
View
Retailer 20
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$3,246 SGD
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Price last confirmed 45 days ago
B
Retailer 21
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$4,150 SGD
View
Retailer 22
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$5,633 SGD
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Price last confirmed 34 days ago
Retailer 23
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$5,633 SGD
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Price last confirmed 26 days ago
Retailer 24
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$5,780 SGD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
7280adbb-83f0-4888-86d9-acae6ef833e4 · Sep 19
$5,879 SGD
$4,603 USD
View
Price last confirmed 47 days ago
24 more retailers have this diamond
Prices start from $1,853 SGDSave up to $2,297 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.33ct Round
$1,853 SGD