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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6425680153

Certificate GIA 6425680153

Diamond specifications and retailer prices

From $10,455 NZD
As of November 7, 2026
Save $1,537 NZD (13%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $16,220 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6425680153. Listed at 6 retailers as of November 6, 2026, with a relatively tight 15% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.30
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6425680153
Dimensions6.57 × 6.18 × 4.18 mm
L/W Ratio1.06
Top View
6.57 mm6.18 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6425680153
Side View
Table 76.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: $16,220 NZD|Low: $8,794 NZD|High: $16,458 NZD|Avg: $11,803 NZD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 4$8,794 NZD
Retailer 2$10,455 NZD
Retailer 5$10,843 NZD
Retailer 3$11,992 NZD
Retailer 6$12,175 NZD
MOH London$16,220 NZD

34 data points across 6 retailers

6 retailers$10,455 NZD to $11,992 NZD

Retailer 1
-
$8,794 NZD
Price last confirmed 10 days ago
B
Retailer 2
-
$10,455 NZD
View
Retailer 3
-
$10,843 NZD
View
Price last confirmed 39 days ago
B
Retailer 4
-
$11,992 NZD
View
Retailer 5
-
$12,175 NZD
View
Price last confirmed 15 days ago
Most Expensive
MOH London
D6B77A81A · Nov 4
$16,220 NZD
£7,080 GBP
View
Price under review
5 more retailers have this diamond
Prices start from $10,455 NZDSave up to $1,537 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
1.30ct Cushion
$10,455 NZD