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Cushion|Natural|GIA

1.81ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6475646979

Certificate GIA 6475646979

Diamond specifications and retailer prices

From $9,786 NZD
As of November 4, 2026
Save $8,415 NZD (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $18,202 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1.81ct natural cushion diamond

This 1.81ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6475646979. Listed at 9 retailers as of November 4, 2026, with prices from $9,786 to $18,202, a $8,415 spread on the same certified stone. MOH London lists it at $18,202. 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

1.81
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6475646979
Dimensions7.95 × 6.28 × 4.30 mm
L/W Ratio1.27
Top View
7.95 mm6.28 mm1.81 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6475646979
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 68.5%

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 4
Current: $18,202 NZD|Low: $9,786 NZD|High: $18,470 NZD|Avg: $13,589 NZD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$9,786 NZD
Retailer 4$11,763 NZD
Retailer 2$12,018 NZD
Retailer 7$12,820 NZD
Retailer 3$13,461 NZD
Retailer 8$13,656 NZD
Retailer 5$15,115 NZD
MOH London$18,202 NZD

34 data points across 8 retailers

9 retailers$9,786 NZD to $18,202 NZD

B
Cheapest Retailer
-
$9,786 NZD
B
Retailer 2
-
$11,060 NZD
View
B
Retailer 3
-
$11,763 NZD
View
B
Retailer 4
-
$12,018 NZD
View
B
Retailer 5
-
$12,820 NZD
View
B
Retailer 6
-
$13,461 NZD
View
Retailer 7
-
$13,656 NZD
View
Price last confirmed 15 days ago
B
Retailer 8
-
$15,115 NZD
View
Most Expensive
B
MOH London
FADBF7DBF · Nov 4
$18,202 NZD
£7,945 GBP
View
8 more retailers have this diamond
Prices start from $9,786 NZDSave up to $8,415 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
1.81ct Cushion
$9,786 NZD