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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6565157448

Certificate GIA 6565157448

Diamond specifications and retailer prices

From €4,419 EUR
As of November 1, 2026
Save €3,108 EUR (41%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €8,115 EUR at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

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 6565157448. Listed at 10 retailers as of November 1, 2026, with a 70% 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

1.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565157448
Dimensions7.31 × 4.55 × 4.55 mm
L/W Ratio1.61
Culet sizeNone
Top View
7.31 mm4.55 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565157448
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.0%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: €4,571 EUR|Low: €4,419 EUR|High: €8,981 EUR|Avg: €5,736 EUR|-9.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 5, 2026
Retailer 6€4,419 EUR
Retailer 1€4,571 EUR
Retailer 4€4,726 EUR
Retailer 5€4,871 EUR
Retailer 2€4,964 EUR
Retailer 7€5,266 EUR
Retailer 9€5,552 EUR
Retailer 3€5,744 EUR
Retailer 8€7,527 EUR
Wholesale Diamonds Direct€8,115 EUR

36 data points across 10 retailers

10 retailers€4,419 EUR to €7,527 EUR

A
Cheapest Retailer
-
€4,419 EUR
A
Retailer 2
-
€4,571 EUR
View
A
Retailer 3
-
€4,726 EUR
View
A
Retailer 4
-
€4,871 EUR
View
A
Retailer 5
-
€4,964 EUR
View
A
Retailer 6
-
€5,266 EUR
View
B+
Retailer 7
-
€5,552 EUR
View
B+
Retailer 8
-
€5,744 EUR
View
B
Retailer 9
-
€7,527 EUR
View
Most Expensive
Wholesale Diamonds Direct
299902968 · Oct 26
€8,115 EUR
$9,060 USD
View
Price last confirmed 11 days ago
9 more retailers have this diamond
Prices start from €4,419 EURSave up to €3,108 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.

A
1.51ct Round
€4,419 EUR