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Round|Natural|GIA

6.18ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2245040202

Certificate GIA 2245040202

Diamond specifications and retailer prices

From €83,295 EUR
$93,058 USD
As of October 30, 2026
Save €52,719 EUR (39%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €136,014 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 6.18ct natural round diamond

This 6.18ct natural round sits in the over five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245040202. Listed at 8 retailers as of October 30, 2026, with prices from €83,295 to €136,014, a €52,719 spread on the same certified stone. MOH London lists it at €136,014. 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

6.18
Carat
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2245040202
Dimensions11.74 × 11.71 × 7.17 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Needle
Top View
11.74 mm11.71 mm6.18 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245040202
Side View
Table 59.0%Crown 35°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.2%

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: Oct 30
Current: €136,014 EUR|Low: €76,566 EUR|High: €136,743 EUR|Avg: €95,102 EUR|+7.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7€76,566 EUR
Retailer 4€83,295 EUR
Retailer 5€83,764 EUR
Retailer 3€87,494 EUR
Retailer 6€88,280 EUR
Retailer 8€91,959 EUR
Retailer 2€103,199 EUR
MOH London€136,014 EUR

11 data points across 8 retailers

8 retailers€83,295 EUR to €136,014 EUR

B+
Cheapest Retailer
-
€83,295 EUR
$93,058 USD
B+
Retailer 2
-
€83,764 EUR
$93,582 USD
View
B+
Retailer 3
-
€87,494 EUR
£76,968 GBP
View
B+
Retailer 4
-
€90,718 EUR
$101,351 USD
View
Retailer 5
-
€95,637 EUR
$106,846 USD
View
Price last confirmed 31 days ago
Retailer 6
-
€99,316 EUR
$110,956 USD
View
Price last confirmed 33 days ago
B
Retailer 7
-
€103,199 EUR
View
Most Expensive
B
MOH London
C36C08406 · Nov 1
€136,014 EUR
£119,650 GBP
View
7 more retailers have this diamond
Prices start from €83,295 EURSave up to €52,719 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+
6.18ct Round
€83,295 EUR