Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 6531260924

Certificate GIA 6531260924

Diamond specifications and retailer prices

From $3,328 USD
HK$26,000 HKD
As of November 1, 2026
Save $4,515 USD (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,843 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6531260924. Listed at 19 retailers as of October 30, 2026, with prices from $3,328 to $7,843, a $4,515 spread on the same certified stone. NZ Jewellers lists it at $7,843. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceVery Strong
Crown angle37°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 6531260924
Dimensions7.20 × 7.11 × 4.54 mm
L/W Ratio1.01
Top View
7.20 mm7.11 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceVery Strong
CertificateGIA 6531260924
Side View
Table 58.0%Crown 37°Girdle: STK-THKPavilion 40°Culet: NoneDepth 63.5%

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: Nov 1
Current: $7,843 USD|Low: $3,290 USD|High: $7,843 USD|Avg: $4,881 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
November 1, 2026
Retailer 9$3,328 USD
Retailer 11$3,848 USD
Retailer 13$4,015 USD
Retailer 15$4,154 USD
Retailer 14$4,155 USD
Retailer 8$4,304 USD
Retailer 4$4,502 USD
Retailer 5$4,502 USD
Retailer 3$4,538 USD
Retailer 7$4,543 USD
Retailer 12$5,048 USD
Retailer 2$5,073 USD
Retailer 6$5,194 USD
Retailer 10$7,209 USD
NZ Jewellers$7,843 USD

42 data points across 15 retailers

19 retailers$3,328 USD to $7,843 USD

A
Cheapest Retailer
-
$3,328 USD
HK$26,000 HKD
B+
Retailer 2
-
$3,848 USD
View
B+
Retailer 3
-
$3,895 USD
View
B+
Retailer 4
-
$3,926 USD
View
B+
Retailer 5
-
$4,015 USD
View
B+
Retailer 6
-
$4,154 USD
View
Final sale: no returns
A
Retailer 7
-
$4,155 USD
SGD 5,615 SGD
View
B+
Retailer 8
-
$4,189 USD
SGD 5,661 SGD
View
A
Retailer 9
-
$4,304 USD
£3,389 GBP
View
B+
Retailer 10
-
$4,502 USD
View
B+
Retailer 11
-
$4,502 USD
View
Retailer 12
-
$4,538 USD
A$6,982 AUD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
$4,543 USD
View
B+
Retailer 14
-
$5,048 USD
£3,975 GBP
View
B+
Retailer 15
-
$5,073 USD
€4,831 EUR
View
B+
Retailer 16
-
$5,194 USD
View
B
Retailer 17
-
$6,398 USD
View
B
Retailer 18
-
$7,209 USD
£5,676 GBP
View
Most Expensive
B
NZ Jewellers
1cc335ea-eb93-44d1-91b3-413f7d96281e · Oct 30
$7,843 USD
View
18 more retailers have this diamond
Prices start from $3,328 USDSave up to $4,515 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
1.51ct Round
$3,328 USD