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1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1499381589

Certificate GIA 1499381589

Diamond specifications and retailer prices

From €6,813 EUR
$7,641 USD
As of November 1, 2026
Save €7,739 EUR (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €14,551 EUR 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 1499381589. Listed at 19 retailers as of October 30, 2026, with prices from €6,813 to €14,551, a €7,739 spread on the same certified stone. NZ Jewellers lists it at €14,551. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1499381589
Dimensions7.30 × 7.28 × 4.57 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Feather, Cloud
Top View
7.30 mm7.28 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1499381589
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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: €9,641 EUR|Low: €7,276 EUR|High: €12,271 EUR|Avg: €9,244 EUR|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7€7,276 EUR
Retailer 2€8,003 EUR
Retailer 8€8,004 EUR
Retailer 6€8,039 EUR
Retailer 4€9,466 EUR
Retailer 1€9,641 EUR
Retailer 5€10,689 EUR
Retailer 3€12,125 EUR

36 data points across 8 retailers

19 retailers€6,813 EUR to €14,551 EUR

Retailer 1
-
€6,233 EUR
$6,991 USD
Price last confirmed 71 days ago
B+
Retailer 2
-
€6,813 EUR
$7,641 USD
View
B+
Retailer 3
-
€7,240 EUR
$8,120 USD
View
B+
Retailer 4
-
€7,276 EUR
$8,161 USD
View
B
Retailer 5
-
€7,276 EUR
$8,161 USD
View
Final sale: no returns
B
Retailer 6
-
€7,882 EUR
$8,841 USD
View
B+
Retailer 7
-
€8,003 EUR
£7,067 GBP
View
B
Retailer 8
-
€8,004 EUR
$8,977 USD
View
Retailer 9
-
€8,039 EUR
A$13,871 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
€8,622 EUR
$9,670 USD
View
B
Retailer 11
-
€8,622 EUR
$9,670 USD
View
B
Retailer 12
-
€8,907 EUR
$9,990 USD
View
B
Retailer 13
-
€9,095 EUR
$10,201 USD
View
B
Retailer 14
-
€9,466 EUR
View
Retailer 15
-
€9,579 EUR
$10,744 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
€9,641 EUR
£8,514 GBP
View
B
Retailer 17
-
€10,689 EUR
ZAR 193,676 ZAR
View
B
Retailer 18
-
€12,125 EUR
£10,708 GBP
View
Most Expensive
B
NZ Jewellers
1689698a-db4d-4d37-997d-21b4358c82c3 · Oct 30
€14,551 EUR
$16,321 USD
View
18 more retailers have this diamond
Prices start from €6,813 EURSave up to €7,739 EUR

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
€6,813 EUR