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Cushion|Natural|GIA

1.91ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6541514873

Certificate GIA 6541514873

Diamond specifications and retailer prices

From $7,546 AUD
As of November 5, 2026
Save $5,013 AUD (40%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $12,560 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.91ct natural cushion diamond

This 1.91ct 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 6541514873. Listed at 6 retailers as of November 4, 2026, with prices from $7,546 to $12,560, a $5,013 spread on the same certified stone. MOH London lists it at $12,560. 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

1.91
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541514873
Dimensions7.86 × 6.21 × 4.50 mm
L/W Ratio1.27
Top View
7.86 mm6.21 mm1.91 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541514873
Side View
Table 57.0%CrownGirdlePavilionCulet: NoneDepth 72.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $12,560 AUD|Low: $7,233 AUD|High: $14,309 AUD|Avg: $9,511 AUD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$7,546 AUD
Retailer 3$7,593 AUD
Retailer 7$7,594 AUD
Retailer 6$7,906 AUD
Retailer 2$8,895 AUD
Retailer 4$9,646 AUD
MOH London$12,560 AUD
Retailer 8$14,309 AUD

41 data points across 8 retailers

6 retailers$7,546 AUD to $12,560 AUD

B+
Cheapest Retailer
-
$7,546 AUD
B+
Retailer 2
-
$7,593 AUD
View
Retailer 3
-
$7,906 AUD
View
Price last confirmed 30 days ago
B+
Retailer 4
-
$8,895 AUD
View
B
Retailer 5
-
$9,646 AUD
View
Most Expensive
B
MOH London
FF54AB538 · Nov 4
$12,560 AUD
£6,795 GBP
View
5 more retailers have this diamond
Prices start from $7,546 AUDSave up to $5,013 AUD

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+
1.91ct Cushion
$7,546 AUD