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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566495423

Certificate GIA 2566495423

Diamond specifications and retailer prices

From $5,877 SGD
HK$35,900 HKD
As of November 1, 2026
Save $7,234 SGD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $13,111 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566495423. Listed at 18 retailers as of October 30, 2026, with prices from $5,877 to $13,111, a $7,234 spread on the same certified stone. NZ Jewellers lists it at $13,111. 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

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2566495423
Dimensions7.33 × 7.37 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Pinpoint, Indented Natural
Top View
7.33 mm7.37 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566495423
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.8%

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 1
Current: $13,111 SGD|Low: $5,828 SGD|High: $13,111 SGD|Avg: $8,209 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 17$5,877 SGD
Retailer 13$6,233 SGD
Retailer 9$6,704 SGD
Retailer 8$6,873 SGD
Retailer 14$6,874 SGD
Retailer 11$7,470 SGD
Retailer 5$7,838 SGD
Retailer 6$7,838 SGD
Retailer 10$7,838 SGD
Retailer 3$7,961 SGD
Retailer 7$8,039 SGD
Retailer 2$8,062 SGD
Retailer 18$8,200 SGD
Retailer 12$8,528 SGD
Retailer 4$9,044 SGD
Retailer 16$9,631 SGD
Retailer 15$11,548 SGD
NZ Jewellers$13,111 SGD

11 data points across 18 retailers

18 retailers$5,877 SGD to $13,111 SGD

A
Cheapest Retailer
-
$5,877 SGD
HK$35,900 HKD
A
Retailer 2
-
$6,233 SGD
₹464,171 INR
View
A
Retailer 3
-
$6,704 SGD
View
A
Retailer 4
-
$6,873 SGD
$5,374 USD
View
A
Retailer 5
-
$6,874 SGD
$5,375 USD
View
B+
Retailer 6
-
$7,470 SGD
£4,599 GBP
View
B+
Retailer 7
-
$7,838 SGD
$6,129 USD
View
B+
Retailer 8
-
$7,838 SGD
$6,129 USD
View
B+
Retailer 9
-
$7,838 SGD
$6,129 USD
View
B+
Retailer 10
-
$7,961 SGD
$6,225 USD
View
B+
Retailer 11
-
$8,039 SGD
$6,286 USD
View
B+
Retailer 12
-
$8,062 SGD
£4,964 GBP
View
B+
Retailer 13
-
$8,200 SGD
$6,412 USD
View
B+
Retailer 14
-
$8,528 SGD
€6,351 EUR
View
B+
Retailer 15
-
$9,044 SGD
$7,072 USD
View
B
Retailer 16
-
$9,631 SGD
ZAR 121,661 ZAR
View
B
Retailer 17
-
$11,548 SGD
£7,110 GBP
View
Most Expensive
B
NZ Jewellers
ff341407-2ec3-4de4-9297-4dde2b7d59ee · Oct 30
$13,111 SGD
$10,252 USD
View
17 more retailers have this diamond
Prices start from $5,877 SGDSave up to $7,234 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
1.51ct Round
$5,877 SGD