Round|Natural|GIA

0.51ct E I1 Round Natural Diamond

EX • E/I1 • GIA 6522378676

Certificate GIA 6522378676

Diamond specifications and retailer prices

From £452 GBP
HK$4,700 HKD
As of October 29, 2026
Save £151 GBP (25%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,263 GBP at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded E colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by GIA 6522378676. Listed at 7 retailers as of October 29, 2026, with a 33% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
E
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6522378676
Dimensions5.14 × 5.12 × 3.17 mm
L/W Ratio1.00
Top View
5.14 mm5.12 mm0.51 ctE / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6522378676
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 61.8%

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 29
Current: £602 GBP|Low: £442 GBP|High: £613 GBP|Avg: £521 GBP|+4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 2£449 GBP
Retailer 3£452 GBP
Retailer 4£502 GBP
Retailer 1£602 GBP
Retailer 5£613 GBP

22 data points across 5 retailers

7 retailers£452 GBP to £602 GBP

Retailer 1
-
£402 GBP
$536 USD
Price last confirmed 22 days ago
Retailer 2
-
£434 GBP
$578 USD
View
Price last confirmed 22 days ago
Retailer 3
-
£434 GBP
$578 USD
View
Price last confirmed 30 days ago
B+
Retailer 4
-
£452 GBP
HK$4,700 HKD
View
Retailer 5
-
£465 GBP
$619 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
£602 GBP
€764 EUR
View
Most Expensive
NZ Jewellers
cf73cbc8-8891-427b-9248-e48a1677b1fe · Sep 24
£1,263 GBP
$1,682 USD
View
Price last confirmed 35 days ago
6 more retailers have this diamond
Prices start from £452 GBPSave up to £151 GBP

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+
0.51ct Round
£452 GBP