Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6531246335

Certificate GIA 6531246335

Diamond specifications and retailer prices

From $2,778 USD
HK$21,700 HKD
As of October 31, 2026
Save $3,474 USD (56%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $6,252 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 6531246335. Listed at 24 retailers as of October 30, 2026, with prices from $2,778 to $6,252, a $3,474 spread on the same certified stone. NZ Jewellers lists it at $6,252. 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
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6531246335
Dimensions6.95 × 6.91 × 4.34 mm
L/W Ratio1.01
Top View
6.95 mm6.91 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531246335
Side View
Table 59.0%Crown 36°Girdle: STK-STKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $6,252 USD|Low: $2,752 USD|High: $6,252 USD|Avg: $3,831 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 1, 2026
Retailer 18$2,778 USD
Retailer 17$2,786 USD
Retailer 6$3,093 USD
Retailer 22$3,185 USD
Retailer 15$3,202 USD
Retailer 4$3,312 USD
Retailer 21$3,419 USD
Retailer 8$3,450 USD
Retailer 3$3,463 USD
Retailer 19$3,554 USD
Retailer 7$3,589 USD
Retailer 12$3,589 USD
Retailer 14$3,600 USD
Retailer 10$3,727 USD
Retailer 2$3,728 USD
Retailer 23$3,734 USD
Retailer 16$3,910 USD
Retailer 5$4,097 USD
Retailer 20$4,141 USD
Retailer 13$4,411 USD
Retailer 11$5,214 USD
Retailer 9$6,034 USD
NZ Jewellers$6,252 USD

26 data points across 23 retailers

24 retailers$2,778 USD to $6,252 USD

A
Cheapest Retailer
-
$2,778 USD
HK$21,700 HKD
A
Retailer 2
-
$2,786 USD
₹265,380 INR
View
A
Retailer 3
-
$3,093 USD
A$4,759 AUD
View
A
Retailer 4
-
$3,185 USD
View
A
Retailer 5
-
$3,312 USD
View
Final sale: no returns
A
Retailer 6
-
$3,419 USD
View
A
Retailer 7
-
$3,450 USD
View
A
Retailer 8
-
$3,463 USD
£2,727 GBP
View
Retailer 9
-
$3,552 USD
SGD 4,800 SGD
View
Price last confirmed 12 days ago
A
Retailer 10
-
$3,554 USD
View
A
Retailer 11
-
$3,589 USD
View
A
Retailer 12
-
$3,589 USD
View
A
Retailer 13
-
$3,600 USD
View
B+
Retailer 14
-
$3,727 USD
View
A
Retailer 15
-
$3,728 USD
£2,935 GBP
View
B+
Retailer 16
-
$3,734 USD
View
Retailer 17
-
$3,910 USD
A$6,015 AUD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
$4,097 USD
€3,902 EUR
View
B+
Retailer 19
-
$4,141 USD
View
B+
Retailer 20
-
$4,411 USD
ZAR 71,261 ZAR
View
B
Retailer 21
-
$5,214 USD
View
Retailer 22
-
$5,450 USD
View
Price last confirmed 15 days ago
B
Retailer 23
-
$6,034 USD
£4,751 GBP
View
Most Expensive
B
NZ Jewellers
2489d398-abfa-48ac-8047-ea7eccc10bf1 · Oct 30
$6,252 USD
View
23 more retailers have this diamond
Prices start from $2,778 USDSave up to $3,474 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.

A
1.31ct Round
$2,778 USD