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Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 2225656240

Certificate GIA 2225656240

Diamond specifications and retailer prices

From $8,980 SGD
$7,022 USD
As of November 2, 2026
Save $7,897 SGD (47%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $16,877 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2225656240. Listed at 24 retailers as of November 1, 2026, with prices from $8,980 to $16,877, a $7,897 spread on the same certified stone. MOH London lists it at $16,877. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.57°
Pavilion angle40.44°
OriginNatural
Grading LabGIA
CertificateGIA 2225656240
Dimensions6.79 × 6.63 × 4.44 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.79 mm6.63 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2225656240
Side View
Table 68.0%Crown 35.57°Girdle: THK-VTKPavilion 40.44°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $16,877 SGD|Low: $8,826 SGD|High: $17,080 SGD|Avg: $11,580 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3$8,980 SGD
Retailer 7$9,035 SGD
Retailer 9$9,482 SGD
Retailer 10$10,126 SGD
Retailer 11$10,128 SGD
Retailer 8$10,211 SGD
Retailer 4$11,304 SGD
Retailer 6$11,418 SGD
Retailer 2$13,228 SGD
Retailer 5$14,877 SGD
MOH London$16,877 SGD

44 data points across 11 retailers

24 retailers$8,980 SGD to $16,877 SGD

B+
Cheapest Retailer
-
$8,980 SGD
$7,022 USD
B+
Retailer 2
-
$9,035 SGD
$7,065 USD
View
B
Retailer 3
-
$9,418 SGD
$7,364 USD
View
B
Retailer 4
-
$9,453 SGD
A$11,372 AUD
View
B
Retailer 5
-
$9,482 SGD
$7,414 USD
View
B
Retailer 6
-
$9,747 SGD
$7,621 USD
View
B
Retailer 7
-
$10,084 SGD
$7,885 USD
View
B
Retailer 8
-
$10,126 SGD
$7,918 USD
View
Final sale: no returns
B
Retailer 9
-
$10,128 SGD
$7,919 USD
View
B
Retailer 10
-
$10,211 SGD
$7,984 USD
View
B
Retailer 11
-
$10,792 SGD
$8,438 USD
View
B
Retailer 12
-
$10,884 SGD
CA$11,820 CAD
View
B
Retailer 13
-
$11,121 SGD
A$13,378 AUD
View
B
Retailer 14
-
$11,147 SGD
$8,716 USD
View
B
Retailer 15
-
$11,304 SGD
£6,959 GBP
View
Retailer 16
-
$11,418 SGD
A$13,736 AUD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$11,855 SGD
$9,270 USD
View
B
Retailer 18
-
$11,855 SGD
$9,270 USD
View
B
Retailer 19
-
$12,113 SGD
$9,471 USD
View
B
Retailer 20
-
$12,252 SGD
$9,580 USD
View
B
Retailer 21
-
$13,228 SGD
€9,851 EUR
View
Retailer 22
-
$13,333 SGD
$10,425 USD
View
Price last confirmed 10 days ago
B
Retailer 23
-
$14,877 SGD
ZAR 187,930 ZAR
View
Most Expensive
B
MOH London
2FED25E2D · Nov 1
$16,877 SGD
£10,391 GBP
View
23 more retailers have this diamond
Prices start from $8,980 SGDSave up to $7,897 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.

B+
1.51ct Cushion
$8,980 SGD