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Cushion|Natural|GIA

1.51ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 2556256739

Certificate GIA 2556256739

Diamond specifications and retailer prices

From $4,402 SGD
$3,443 USD
As of October 31, 2026
Save $3,487 SGD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,203 SGD at Wholesale Diamonds Direct · As of October 23, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded G 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 2556256739. Listed at 14 retailers as of October 31, 2026, with a 79% 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

1.51
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556256739
Dimensions6.77 × 6.05 × 4.21 mm
L/W Ratio1.12
Culet sizeNone
Top View
6.77 mm6.05 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556256739
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.6%

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: Oct 31
Current: $5,131 SGD|Low: $4,402 SGD|High: $8,681 SGD|Avg: $5,926 SGD|-5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
November 2, 2026
Retailer 10$4,402 SGD
Retailer 9$4,473 SGD
Retailer 6$4,484 SGD
Retailer 7$4,703 SGD
Retailer 4$4,807 SGD
Retailer 1$5,131 SGD
Retailer 8$5,553 SGD
Retailer 12$5,594 SGD
Retailer 2$5,654 SGD
Retailer 5$6,869 SGD
Retailer 11$7,424 SGD
Retailer 3$7,889 SGD
Wholesale Diamonds Direct$8,203 SGD

34 data points across 13 retailers

14 retailers$4,402 SGD to $7,889 SGD

A
Cheapest Retailer
-
$4,402 SGD
$3,443 USD
A
Retailer 2
-
$4,473 SGD
$3,499 USD
View
Retailer 3
-
$4,484 SGD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$4,703 SGD
$3,679 USD
View
A
Retailer 5
-
$4,807 SGD
View
A
Retailer 6
-
$5,131 SGD
£3,161 GBP
View
A
Retailer 7
-
$5,553 SGD
$4,344 USD
View
A
Retailer 8
-
$5,594 SGD
$4,376 USD
View
A
Retailer 9
-
$5,654 SGD
$4,423 USD
View
A
Retailer 10
-
$5,735 SGD
$4,486 USD
View
A
Retailer 11
-
$6,869 SGD
$5,373 USD
View
B+
Retailer 12
-
$7,424 SGD
$5,807 USD
View
B+
Retailer 13
-
$7,889 SGD
$6,171 USD
View
Most Expensive
Wholesale Diamonds Direct
444917139 · Oct 23
$8,203 SGD
$6,417 USD
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from $4,402 SGDSave up to $3,487 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 Cushion
$4,402 SGD