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Cushion|Natural|GIA

0.51ct G SI1 Cushion Natural Diamond

GD • G/SI1 • GIA 7568435588

Certificate GIA 7568435588

Diamond specifications and retailer prices

From $731 NZD
As of November 6, 2026
Save $1,573 NZD (68%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,230 NZD at Queensmith · As of October 28, 2026
View at Queensmith

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7568435588. Listed at 18 retailers as of November 1, 2026, with a 215% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7568435588
Dimensions5.81 × 4.15 × 2.67 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud
Top View
5.81 mm4.15 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7568435588
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 64.4%

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 6
Current: $3,230 NZD|Low: $731 NZD|High: $3,230 NZD|Avg: $1,385 NZD|+3.7%
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
Retailer 15
November 6, 2026
Retailer 2$731 NZD
Retailer 15$853 NZD
Retailer 4$920 NZD
Retailer 5$1,028 NZD
Retailer 14$1,075 NZD
Retailer 6$1,151 NZD
Retailer 8$1,218 NZD
Retailer 7$1,234 NZD
Retailer 10$1,239 NZD
Retailer 13$1,250 NZD
Retailer 3$1,353 NZD
Retailer 9$1,474 NZD
Retailer 11$1,539 NZD
Retailer 12$2,304 NZD
Queensmith$3,230 NZD

25 data points across 15 retailers

18 retailers$731 NZD to $2,304 NZD

A
Cheapest Retailer
-
$731 NZD
B+
Retailer 2
-
$853 NZD
View
A
Retailer 3
-
$920 NZD
View
Final sale: no returns
Retailer 4
-
$1,028 NZD
View
Price last confirmed 17 days ago
Retailer 5
-
$1,075 NZD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$1,151 NZD
View
B
Retailer 7
-
$1,212 NZD
View
B+
Retailer 8
-
$1,218 NZD
View
B
Retailer 9
-
$1,234 NZD
View
B+
Retailer 10
-
$1,239 NZD
View
B
Retailer 11
-
$1,250 NZD
View
B
Retailer 12
-
$1,353 NZD
View
B
Retailer 13
-
$1,389 NZD
View
B
Retailer 14
-
$1,474 NZD
View
B
Retailer 15
-
$1,539 NZD
View
Retailer 16
-
$1,678 NZD
View
Price last confirmed 34 days ago
B
Retailer 17
-
$2,304 NZD
View
Most Expensive
Queensmith
7568435588 · Oct 28
$3,230 NZD
£1,410 GBP
View
Price last confirmed 9 days ago
17 more retailers have this diamond
Prices start from $731 NZDSave up to $1,573 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
$731 NZD