Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

VG • H/SI1 • GIA 1428687763

Certificate GIA 1428687763

Diamond specifications and retailer prices

From $8,652 NZD
$4,868 USD
As of November 2, 2026
Save $9,992 NZD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $18,644 NZD 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1428687763. Listed at 19 retailers as of November 1, 2026, with prices from $8,652 to $18,644, a $9,992 spread on the same certified stone. MOH London lists it at $18,644. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1428687763
Dimensions6.69 × 5.94 × 4.13 mm
L/W Ratio1.13
Culet sizeNone
Top View
6.69 mm5.94 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1428687763
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.5%

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: $18,644 NZD|Low: $9,324 NZD|High: $18,870 NZD|Avg: $13,084 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 2$9,540 NZD
Retailer 6$10,477 NZD
Retailer 7$11,188 NZD
Retailer 8$11,188 NZD
Retailer 5$12,985 NZD
Retailer 3$14,614 NZD
Retailer 4$16,437 NZD
MOH London$18,644 NZD

44 data points across 8 retailers

19 retailers$8,652 NZD to $18,644 NZD

B+
Cheapest Retailer
-
$8,652 NZD
$4,868 USD
B+
Retailer 2
-
$9,540 NZD
£4,227 GBP
View
B+
Retailer 3
-
$9,621 NZD
$5,413 USD
View
B+
Retailer 4
-
$10,255 NZD
$5,770 USD
View
B+
Retailer 5
-
$10,255 NZD
$5,770 USD
View
B+
Retailer 6
-
$10,477 NZD
$5,895 USD
View
B
Retailer 7
-
$10,570 NZD
$5,947 USD
View
B
Retailer 8
-
$10,593 NZD
$5,960 USD
View
B
Retailer 9
-
$11,188 NZD
$6,295 USD
View
Final sale: no returns
B
Retailer 10
-
$11,188 NZD
$6,295 USD
View
B
Retailer 11
-
$11,233 NZD
$6,320 USD
View
B+
Retailer 12
-
$11,384 NZD
$6,405 USD
View
B
Retailer 13
-
$11,922 NZD
$6,708 USD
View
B
Retailer 14
-
$12,829 NZD
$7,218 USD
View
Retailer 15
-
$12,985 NZD
A$11,240 AUD
View
Price last confirmed 12 days ago
B
Retailer 16
-
$14,614 NZD
€7,831 EUR
View
Retailer 17
-
$14,741 NZD
$8,294 USD
View
Price last confirmed 11 days ago
B
Retailer 18
-
$16,437 NZD
ZAR 149,411 ZAR
View
Most Expensive
B
MOH London
86C3866EA · Nov 1
$18,644 NZD
£8,260 GBP
View
18 more retailers have this diamond
Prices start from $8,652 NZDSave up to $9,992 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.

B+
1.51ct Cushion
$8,652 NZD