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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7481667514

Certificate GIA 7481667514

Diamond specifications and retailer prices

From $6,775 USD
As of November 1, 2026
Save $7,904 USD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $14,679 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7481667514. Listed at 19 retailers as of October 30, 2026, with prices from $6,775 to $14,679, a $7,904 spread on the same certified stone. NZ Jewellers lists it at $14,679. 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

1.51
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7481667514
Dimensions7.35 × 7.30 × 4.53 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Cert comments
Pinpoints are not shown.
Top View
7.35 mm7.30 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7481667514
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $9,059 USD|Low: $6,775 USD|High: $12,379 USD|Avg: $8,897 USD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 8$6,775 USD
Retailer 7$6,872 USD
Retailer 9$7,330 USD
Retailer 2$8,073 USD
Retailer 3$8,124 USD
Retailer 6$8,312 USD
Retailer 1$9,059 USD
Retailer 10$9,844 USD
Retailer 4$10,782 USD
Retailer 5$12,296 USD

44 data points across 10 retailers

19 retailers$6,775 USD to $14,679 USD

B+
Cheapest Retailer
-
$6,775 USD
B+
Retailer 2
-
$6,872 USD
View
B+
Retailer 3
-
$7,330 USD
View
B+
Retailer 4
-
$7,339 USD
View
B+
Retailer 5
-
$7,951 USD
View
B+
Retailer 6
-
$8,073 USD
View
B+
Retailer 7
-
$8,124 USD
£6,397 GBP
View
Retailer 8
-
$8,312 USD
A$12,788 AUD
View
Price last confirmed 11 days ago
B
Retailer 9
-
$8,750 USD
View
B
Retailer 10
-
$8,750 USD
View
B
Retailer 11
-
$9,040 USD
View
B
Retailer 12
-
$9,059 USD
€8,628 EUR
View
B
Retailer 13
-
$9,174 USD
View
Retailer 14
-
$9,666 USD
View
Price last confirmed 10 days ago
Retailer 15
-
$9,844 USD
£7,751 GBP
View
Price last confirmed 33 days ago
B
Retailer 16
-
$10,782 USD
ZAR 174,184 ZAR
View
B
Retailer 17
-
$12,296 USD
£9,682 GBP
View
B
Retailer 18
-
$13,869 USD
£10,921 GBP
View
Most Expensive
B
NZ Jewellers
9149c5bf-0b50-4c78-bce4-33fd8893ebd1 · Oct 30
$14,679 USD
View
18 more retailers have this diamond
Prices start from $6,775 USDSave up to $7,904 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+
1.51ct Round
$6,775 USD