CaratHunter
Plans
Cushion|Natural|GIA

0.51ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 6565226153

Certificate GIA 6565226153

Diamond specifications and retailer prices

From $802 NZD
$452 USD
As of November 2, 2026
Save $204 NZD (20%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,006 NZD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6565226153. Listed at 4 retailers as of November 2, 2026, with prices from $802 to $1,006, a $204 spread on the same certified stone. 77 Diamonds lists it at $1,006. 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

0.51
Carat
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565226153
Dimensions4.53 × 4.43 × 3.01 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal
Top View
4.53 mm4.43 mm0.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6565226153
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.0%

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 2
Current: $1,006 NZD|Low: $802 NZD|High: $1,006 NZD|Avg: $884 NZD|+5.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$802 NZD
Retailer 4$816 NZD
Retailer 3$872 NZD
77 Diamonds$1,006 NZD

39 data points across 4 retailers

4 retailers$802 NZD to $1,006 NZD

A
Cheapest Retailer
-
$802 NZD
$452 USD
Final sale: no returns
Retailer 2
-
$816 NZD
$460 USD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
$872 NZD
SGD 664 SGD
View
Most Expensive
B+
77 Diamonds
CUSCP6MB47FXP · Nov 2
$1,006 NZD
£446 GBP
View
3 more retailers have this diamond
Prices start from $802 NZDSave up to $204 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
0.51ct Cushion
$802 NZD