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Round|Natural|GIA

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1558302144

Certificate GIA 1558302144

Diamond specifications and retailer prices

From €18,971 EUR
$21,195 USD
As of November 1, 2026
Save €8,578 EUR (31%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €27,549 EUR at Diamonds Direct · As of November 1, 2026
View at Diamonds Direct

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1558302144. Listed at 13 retailers as of November 1, 2026, with prices from €18,971 to €27,549, a €8,578 spread on the same certified stone. Diamonds Direct lists it at €27,549. 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

2.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558302144
Dimensions8.60 × 8.64 × 5.41 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.60 mm8.64 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558302144
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: €27,549 EUR|Low: €18,347 EUR|High: €34,252 EUR|Avg: €22,938 EUR|-4.2%
Diamonds Direct
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
November 2, 2026
Retailer 9€18,971 EUR
Retailer 10€19,651 EUR
Retailer 15€19,734 EUR
Retailer 4€20,141 EUR
Retailer 5€20,768 EUR
Retailer 8€20,934 EUR
Retailer 11€21,540 EUR
Retailer 13€22,716 EUR
Retailer 16€23,013 EUR
Retailer 12€23,051 EUR
Retailer 6€23,339 EUR
Retailer 14€23,425 EUR
Retailer 2€24,203 EUR
Retailer 3€25,943 EUR
Diamonds Direct€27,549 EUR
Retailer 7€33,567 EUR

38 data points across 16 retailers

13 retailers€18,971 EUR to €27,549 EUR

B+
Cheapest Retailer
-
€18,971 EUR
$21,195 USD
B+
Retailer 2
-
€19,651 EUR
$21,954 USD
View
B+
Retailer 3
-
€19,734 EUR
SGD 29,793 SGD
View
Retailer 4
-
€20,934 EUR
$23,388 USD
View
Price last confirmed 27 days ago
B
Retailer 5
-
€21,540 EUR
$24,064 USD
View
B
Retailer 6
-
€22,716 EUR
$25,378 USD
View
B
Retailer 7
-
€23,013 EUR
$25,710 USD
View
B
Retailer 8
-
€23,051 EUR
$25,752 USD
View
B+
Retailer 9
-
€23,425 EUR
$26,170 USD
View
B
Retailer 10
-
€24,203 EUR
$27,040 USD
View
B
Retailer 11
-
€24,905 EUR
$27,824 USD
View
B
Retailer 12
-
€25,943 EUR
$28,984 USD
View
Most Expensive
B
Diamonds Direct
1136884 · Nov 1
€27,549 EUR
$30,778 USD
View
12 more retailers have this diamond
Prices start from €18,971 EURSave up to €8,578 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+
2.51ct Round
€18,971 EUR