Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2136497726

Certificate GIA 2136497726

Diamond specifications and retailer prices

From $7,247 USD
As of October 30, 2026
Save $2,748 USD (27%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $13,396 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.31ct natural round diamond

This 1.31ct natural round 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 and certified by GIA 2136497726. Listed at 20 retailers as of October 30, 2026, with a 38% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.31
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2136497726
Dimensions7.05 × 7.05 × 4.28 mm
L/W Ratio1.00
Culet sizeVery Small
Top View
7.05 mm7.05 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2136497726
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilionCulet: Very SmallDepth 60.7%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $13,396 USD|Low: $6,663 USD|High: $13,486 USD|Avg: $9,425 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6$7,130 USD
Retailer 9$7,854 USD
Retailer 7$7,996 USD
Retailer 8$8,795 USD
Retailer 5$8,830 USD
Retailer 3$8,865 USD
Retailer 10$9,503 USD
Retailer 2$9,890 USD
Retailer 4$11,746 USD
MOH London$13,396 USD

43 data points across 10 retailers

20 retailers$7,247 USD to $9,995 USD

Retailer 1
-
$7,130 USD
Price last confirmed 13 days ago
B
Retailer 2
-
$7,247 USD
View
B
Retailer 3
-
$7,487 USD
View
B
Retailer 4
-
$7,854 USD
CA$10,909 CAD
View
B
Retailer 5
-
$7,960 USD
View
B
Retailer 6
-
$7,996 USD
View
Final sale: no returns
B
Retailer 7
-
$7,996 USD
View
B
Retailer 8
-
$8,662 USD
View
B
Retailer 9
-
$8,795 USD
View
Retailer 10
-
$8,830 USD
A$13,585 AUD
View
Price last confirmed 8 days ago
B
Retailer 11
-
$8,865 USD
£6,980 GBP
View
B
Retailer 12
-
$9,480 USD
View
B
Retailer 13
-
$9,480 USD
View
B
Retailer 14
-
$9,503 USD
View
B
Retailer 15
-
$9,800 USD
View
B
Retailer 16
-
$9,890 USD
€9,419 EUR
View
B
Retailer 17
-
$9,995 USD
View
Retailer 18
-
$11,746 USD
ZAR 189,763 ZAR
View
Price under review
Most Expensive
MOH London
18211AE1E · Oct 29
$13,396 USD
£10,548 GBP
View
Price under review
18 more retailers have this diamond
Prices start from $7,247 USDSave up to $2,748 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
1.31ct Round
$7,247 USD