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Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2556664337

Certificate GIA 2556664337

Diamond specifications and retailer prices

From $8,167 NZD
HK$35,900 HKD
As of November 1, 2026
Save $9,157 NZD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $17,324 NZD 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556664337. Listed at 19 retailers as of October 28, 2026, with prices from $8,167 to $17,324, a $9,157 spread on the same certified stone. Queensmith lists it at $17,324. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556664337
Dimensions7.67 × 5.90 × 4.08 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.67 mm5.90 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556664337
Side View
Table 70.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.2%

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: $17,324 NZD|Low: $8,099 NZD|High: $17,459 NZD|Avg: $11,352 NZD|+1.9%
Queensmith
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
November 3, 2026
Retailer 12$8,167 NZD
Retailer 7$8,713 NZD
Retailer 13$9,103 NZD
Retailer 14$9,310 NZD
Retailer 6$9,617 NZD
Retailer 4$10,047 NZD
Retailer 8$10,184 NZD
Retailer 2$10,443 NZD
Retailer 5$11,164 NZD
Retailer 3$11,387 NZD
Retailer 9$11,889 NZD
Retailer 11$13,374 NZD
Retailer 10$16,037 NZD
Queensmith$17,324 NZD

24 data points across 14 retailers

19 retailers$8,167 NZD to $17,324 NZD

A
Cheapest Retailer
-
$8,167 NZD
HK$35,900 HKD
A
Retailer 2
-
$8,713 NZD
₹466,869 INR
View
A
Retailer 3
-
$9,103 NZD
$5,122 USD
View
Retailer 4
-
$9,310 NZD
SGD 7,079 SGD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$9,617 NZD
SGD 7,312 SGD
View
B+
Retailer 6
-
$9,999 NZD
$5,626 USD
View
B+
Retailer 7
-
$10,006 NZD
$5,630 USD
View
B+
Retailer 8
-
$10,047 NZD
$5,653 USD
View
Final sale: no returns
B+
Retailer 9
-
$10,184 NZD
£4,512 GBP
View
B+
Retailer 10
-
$10,443 NZD
£4,627 GBP
View
Retailer 11
-
$10,887 NZD
A$9,424 AUD
View
Price last confirmed 30 days ago
Retailer 12
-
$10,955 NZD
$6,164 USD
View
Price last confirmed 18 days ago
B+
Retailer 13
-
$11,111 NZD
A$9,618 AUD
View
B+
Retailer 14
-
$11,164 NZD
$6,281 USD
View
B+
Retailer 15
-
$11,387 NZD
$6,407 USD
View
B+
Retailer 16
-
$11,889 NZD
€6,371 EUR
View
B
Retailer 17
-
$13,374 NZD
ZAR 121,565 ZAR
View
B
Retailer 18
-
$16,037 NZD
£7,105 GBP
View
Most Expensive
B
Queensmith
2556664337 · Oct 28
$17,324 NZD
£7,675 GBP
View
18 more retailers have this diamond
Prices start from $8,167 NZDSave up to $9,157 NZD

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
$8,167 NZD