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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 $5,185 USD
As of November 5, 2026
Save $3,445 USD (40%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,630 USD 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 $5,185 to $8,630, a $3,445 spread on the same certified stone. MOH London lists it at $8,630. 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
Color
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: $8,630 USD|Low: $4,970 USD|High: $9,832 USD|Avg: $6,535 USD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$5,185 USD
Retailer 3$5,217 USD
Retailer 7$5,218 USD
Retailer 6$5,432 USD
Retailer 2$6,112 USD
Retailer 4$6,628 USD
MOH London$8,630 USD
Retailer 8$9,832 USD

41 data points across 8 retailers

6 retailers$5,185 USD to $8,630 USD

B+
Cheapest Retailer
-
$5,185 USD
B+
Retailer 2
-
$5,217 USD
View
Retailer 3
-
$5,432 USD
View
Price last confirmed 30 days ago
B+
Retailer 4
-
$6,112 USD
View
B
Retailer 5
-
$6,628 USD
View
Most Expensive
B
MOH London
FF54AB538 · Nov 4
$8,630 USD
£6,795 GBP
View
5 more retailers have this diamond
Prices start from $5,185 USDSave up to $3,445 USD

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
$5,185 USD