Round|Natural|GIA

10.51ct I VS1 Round Natural Diamond

EX • I/VS1 • GIA 2185120582

Certificate GIA 2185120582

Diamond specifications and retailer prices

From €355,148 EUR
$396,773 USD
As of October 31, 2026
Save €122,314 EUR (26%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €477,461 EUR at Cape Diamonds · As of November 1, 2026
View at Cape Diamonds

About this 10.51ct natural round diamond

This 10.51ct natural round sits in the over five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 2185120582. Listed at 16 retailers as of October 31, 2026, with prices from €355,148 to €477,461, a €122,314 spread on the same certified stone. Cape Diamonds lists it at €477,461. At this carat range, natural pricing varies dramatically across retailers, so the cross-retailer spread on this exact stone is your single best indicator of fair price.

The 4Cs

10.51
Carat
I
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2185120582
Dimensions14.06 × 14.02 × 8.61 mm
L/W Ratio1.00
Top View
14.06 mm14.02 mm10.51 ctI / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2185120582
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 61.3%

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 31
Current: €477,461 EUR|Low: €339,074 EUR|High: €478,803 EUR|Avg: €399,852 EUR|+3.6%
Cape Diamonds
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
November 1, 2026
Retailer 10€339,074 EUR
Retailer 6€353,789 EUR
Retailer 4€355,148 EUR
Retailer 5€363,071 EUR
Retailer 2€372,621 EUR
Retailer 8€374,701 EUR
Retailer 14€378,125 EUR
Retailer 9€394,608 EUR
Retailer 11€411,050 EUR
Retailer 12€411,050 EUR
Retailer 13€427,492 EUR
Retailer 3€443,934 EUR
Retailer 7€476,678 EUR
Cape Diamonds€477,461 EUR

31 data points across 14 retailers

16 retailers€355,148 EUR to €477,461 EUR

Retailer 1
-
€339,074 EUR
$378,815 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
€355,148 EUR
$396,773 USD
View
Final sale: no returns
Retailer 3
-
€363,071 EUR
A$624,039 AUD
View
Price last confirmed 33 days ago
B+
Retailer 4
-
€372,621 EUR
£327,791 GBP
View
B+
Retailer 5
-
€374,701 EUR
£329,621 GBP
View
Retailer 6
-
€378,125 EUR
$422,444 USD
View
Price last confirmed 34 days ago
Retailer 7
-
€378,125 EUR
$422,444 USD
View
Price last confirmed 18 days ago
B+
Retailer 8
-
€378,125 EUR
$422,444 USD
View
Retailer 9
-
€394,608 EUR
$440,858 USD
View
Price last confirmed 7 days ago
Retailer 10
-
€411,050 EUR
$459,228 USD
View
Price last confirmed 7 days ago
Retailer 11
-
€411,050 EUR
$459,228 USD
View
Price last confirmed 9 days ago
B
Retailer 12
-
€422,346 EUR
$471,847 USD
View
B
Retailer 13
-
€427,492 EUR
$477,597 USD
View
Retailer 14
-
€443,934 EUR
$495,966 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
€476,678 EUR
View
Most Expensive
B
Cape Diamonds
cert_2185120582 · Nov 1
€477,461 EUR
ZAR 8,617,487 ZAR
View
15 more retailers have this diamond
Prices start from €355,148 EURSave up to €122,314 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+
10.51ct Round
€355,148 EUR