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Cushion|Natural|GIA

1.51ct G SI2 Cushion Natural Diamond

GD • G/SI2 • GIA 2556496790

Certificate GIA 2556496790

Diamond specifications and retailer prices

From $3,827 USD
HK$29,900 HKD
As of November 1, 2026
Save $5,088 USD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,915 USD at Queensmith · As of October 28, 2026
View at Queensmith

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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556496790. Listed at 15 retailers as of October 28, 2026, with prices from $3,827 to $8,915, a $5,088 spread on the same certified stone. Queensmith lists it at $8,915. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556496790
Dimensions7.64 × 5.69 × 3.85 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Cavity, Needle
Top View
7.64 mm5.69 mm1.51 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556496790
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.6%

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 1
Current: $8,915 USD|Low: $3,827 USD|High: $8,954 USD|Avg: $5,717 USD|+2.0%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$3,827 USD
Retailer 3$4,090 USD
Retailer 9$4,481 USD
Retailer 10$4,717 USD
Retailer 4$4,952 USD
Retailer 2$5,102 USD
Retailer 8$5,111 USD
Retailer 7$5,786 USD
Retailer 5$8,141 USD
Queensmith$8,915 USD

26 data points across 10 retailers

15 retailers$3,827 USD to $8,915 USD

A
Cheapest Retailer
-
$3,827 USD
HK$29,900 HKD
A
Retailer 2
-
$4,090 USD
₹389,532 INR
View
A
Retailer 3
-
$4,481 USD
SGD 6,056 SGD
View
B+
Retailer 4
-
$4,659 USD
View
B+
Retailer 5
-
$4,717 USD
View
Final sale: no returns
B+
Retailer 6
-
$4,872 USD
SGD 6,584 SGD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$4,952 USD
£3,899 GBP
View
B+
Retailer 8
-
$5,102 USD
£4,018 GBP
View
B+
Retailer 9
-
$5,111 USD
View
B+
Retailer 10
-
$5,199 USD
A$7,998 AUD
View
B+
Retailer 11
-
$5,263 USD
View
B+
Retailer 12
-
$5,390 USD
View
B+
Retailer 13
-
$5,786 USD
€5,510 EUR
View
B
Retailer 14
-
$8,141 USD
£6,410 GBP
View
Most Expensive
B
Queensmith
2556496790 · Oct 28
$8,915 USD
£7,020 GBP
View
14 more retailers have this diamond
Prices start from $3,827 USDSave up to $5,088 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
1.51ct Cushion
$3,827 USD