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Round|Natural|IGI

2.51ct H SI1 Round Natural Diamond

EX • H/SI1 • IGI 773617951

Shape and cutting style on the report: Round brilliant

Certificate IGI 773617951

Diamond specifications and retailer prices

From HK$108,349 HKD
$13,810 USD
As of November 1, 2026
Save HK$81,356 HKD (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$221,821 HKD at Aurelinne · As of October 21, 2026
View at Aurelinne

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 IGI 773617951. Listed at 13 retailers as of November 1, 2026, with a 75% 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

2.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 773617951
Dimensions8.59 × 8.65 × 5.43 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
8.59 mm8.65 mm2.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 773617951
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.9%

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: HK$221,821 HKD|Low: HK$108,349 HKD|High: HK$279,330 HKD|Avg: HK$158,045 HKD
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5HK$108,349 HKD
Retailer 10HK$112,774 HKD
Retailer 9HK$116,399 HKD
Retailer 2HK$130,211 HKD
Retailer 3HK$142,501 HKD
Retailer 6HK$172,080 HKD
Retailer 4HK$189,705 HKD
Retailer 7HK$207,032 HKD
Retailer 8HK$213,607 HKD
AurelinneHK$221,821 HKD

42 data points across 10 retailers

13 retailersHK$108,349 HKD to HK$189,705 HKD

A
Cheapest Retailer
-
HK$108,349 HKD
$13,810 USD
A
Retailer 2
-
HK$112,774 HKD
$14,374 USD
View
A
Retailer 3
-
HK$116,399 HKD
$14,836 USD
View
Final sale: no returns
A
Retailer 4
-
HK$130,211 HKD
£13,068 GBP
View
A
Retailer 5
-
HK$137,692 HKD
$17,550 USD
View
A
Retailer 6
-
HK$137,692 HKD
$17,550 USD
View
B+
Retailer 7
-
HK$142,321 HKD
$18,140 USD
View
A
Retailer 8
-
HK$142,501 HKD
€17,298 EUR
View
B+
Retailer 9
-
HK$172,080 HKD
$21,933 USD
View
B
Retailer 10
-
HK$189,705 HKD
£19,039 GBP
View
Retailer 11
-
HK$207,032 HKD
$26,388 USD
View
Price last confirmed 10 days ago
Retailer 12
-
HK$213,607 HKD
$27,226 USD
View
Price last confirmed 10 days ago
Most Expensive
Aurelinne
7aac21e0-3eb0-4766-9f63-ac646a3e278b · Oct 21
HK$221,821 HKD
$28,273 USD
View
Price last confirmed 12 days ago
12 more retailers have this diamond
Prices start from HK$108,349 HKDSave up to HK$81,356 HKD

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
2.51ct Round
HK$108,349 HKD