Cushion|Natural|GIA

6.50ct G SI1 Cushion Natural Diamond

VG • G/SI1 • GIA 2221177458

Certificate GIA 2221177458

Diamond specifications and retailer prices

From $282,376 NZD
$158,879 USD
As of October 31, 2026
Save $207,629 NZD (42%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $490,005 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 6.5ct natural cushion diamond

This 6.5ct natural cushion sits in the over five carat band, graded G 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 2221177458. Listed at 13 retailers as of October 31, 2026, with prices from $282,376 to $490,005, a $207,629 spread on the same certified stone. MOH London lists it at $490,005. 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

6.50
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2221177458
Dimensions10.56 × 10.43 × 6.96 mm
L/W Ratio1.01
Top View
10.56 mm10.43 mm6.50 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2221177458
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.7%

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: Oct 31
Current: $490,005 NZD|Low: $261,459 NZD|High: $495,909 NZD|Avg: $337,623 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 9$271,705 NZD
Retailer 12$282,376 NZD
Retailer 5$285,765 NZD
Retailer 13$288,856 NZD
Retailer 10$300,646 NZD
Retailer 8$313,750 NZD
Retailer 11$316,210 NZD
Retailer 4$335,765 NZD
Retailer 2$338,593 NZD
Retailer 6$379,626 NZD
Retailer 7$380,692 NZD
Retailer 3$388,267 NZD
MOH London$490,005 NZD

33 data points across 13 retailers

13 retailers$282,376 NZD to $490,005 NZD

Retailer 1
-
$271,705 NZD
$152,875 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$282,376 NZD
$158,879 USD
View
Final sale: no returns
B
Retailer 3
-
$285,765 NZD
$160,786 USD
View
Retailer 4
-
$288,856 NZD
A$250,038 AUD
View
Price last confirmed 35 days ago
B
Retailer 5
-
$300,646 NZD
$169,159 USD
View
Retailer 6
-
$313,750 NZD
$176,532 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$316,210 NZD
£140,091 GBP
View
Price last confirmed 18 days ago
B
Retailer 8
-
$335,765 NZD
$188,918 USD
View
B
Retailer 9
-
$338,593 NZD
£150,008 GBP
View
B
Retailer 10
-
$379,626 NZD
ZAR 3,450,675 ZAR
View
B
Retailer 11
-
$380,692 NZD
€203,997 EUR
View
B
Retailer 12
-
$388,267 NZD
$218,459 USD
View
Most Expensive
B
MOH London
EF5A99794 · Nov 1
$490,005 NZD
£217,088 GBP
View
12 more retailers have this diamond
Prices start from $282,376 NZDSave up to $207,629 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+
6.50ct Cushion
$282,376 NZD