Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1548400629

Certificate GIA 1548400629

Diamond specifications and retailer prices

From $3,691 USD
As of November 6, 2026
Save $4,376 USD (54%) vs most expensive(unlock to see where)
32 retailers carry this diamond
Most expensive: $8,067 USD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1548400629. Listed at 32 retailers as of November 5, 2026, with a 119% 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

1.30
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1548400629
Dimensions6.90 × 6.93 × 4.33 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.90 mm6.93 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1548400629
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,431 USD|Low: $3,549 USD|High: $7,453 USD|Avg: $4,717 USD|-1.8%
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 3$3,691 USD
Retailer 12$3,823 USD
Retailer 2$3,871 USD
Retailer 5$3,990 USD
Retailer 11$4,195 USD
Retailer 1$4,431 USD
Retailer 13$4,440 USD
Retailer 9$4,529 USD
Retailer 4$4,667 USD
Retailer 8$5,156 USD
Retailer 6$5,200 USD
Retailer 7$5,649 USD
Retailer 10$7,354 USD

36 data points across 13 retailers

32 retailers$3,691 USD to $8,067 USD

A
Cheapest Retailer
-
$3,691 USD
A
Retailer 2
-
$3,823 USD
View
B+
Retailer 3
-
$3,871 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,990 USD
View
B+
Retailer 5
-
$4,177 USD
View
Retailer 6
-
$4,195 USD
View
Price last confirmed 29 days ago
Retailer 7
-
$4,195 USD
View
Price last confirmed 50 days ago
Retailer 8
-
$4,195 USD
View
Price last confirmed 8 days ago
Retailer 9
-
$4,195 USD
View
Price last confirmed 21 days ago
Retailer 10
-
$4,195 USD
View
Price last confirmed 38 days ago
Retailer 11
-
$4,195 USD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$4,431 USD
View
B+
Retailer 13
-
$4,440 USD
View
Retailer 14
-
$4,440 USD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
$4,529 USD
View
B+
Retailer 16
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$4,540 USD
View
B+
Retailer 17
-
$4,540 USD
View
Retailer 18
-
$4,667 USD
View
Price last confirmed 28 days ago
B+
Retailer 19
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$4,690 USD
View
Retailer 20
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$4,840 USD
View
Price last confirmed 45 days ago
Retailer 21
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$4,840 USD
View
Price last confirmed 28 days ago
Retailer 22
-
$4,840 USD
View
Price last confirmed 16 days ago
B
Retailer 23
-
$4,840 USD
View
B+
Retailer 24
-
$5,156 USD
View
B+
Retailer 25
-
$5,200 USD
View
Retailer 26
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$5,236 USD
View
Price last confirmed 22 days ago
B
Retailer 27
-
$5,649 USD
View
B
Retailer 28
-
$7,354 USD
View
Retailer 29
-
$8,067 USD
View
Price last confirmed 48 days ago
B
Retailer 30
-
$8,067 USD
View
Retailer 31
-
$8,067 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
44391ff5-c097-4bda-8922-567e8b4de253 · Oct 20
$8,067 USD
View
Price last confirmed 16 days ago
31 more retailers have this diamond
Prices start from $3,691 USDSave up to $4,376 USD

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
1.30ct Round
$3,691 USD