Emerald|Natural|GIA

0.51ct H SI1 Emerald Natural Diamond

GD • H/SI1 • GIA 6525105448

Certificate GIA 6525105448

Diamond specifications and retailer prices

From £452 GBP
$605 USD
As of October 27, 2026
Save £254 GBP (36%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,115 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct natural emerald diamond

This 0.51ct natural emerald sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6525105448. Listed at 20 retailers as of October 26, 2026, with a 56% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6525105448
Dimensions5.65 × 3.92 × 2.35 mm
L/W Ratio1.44
Top View
5.65 mm3.92 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6525105448
Side View
Table 68.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 59.8%

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 27
Current: £1,115 GBP|Low: £305 GBP|High: £1,126 GBP|Avg: £628 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 6£335 GBP
Retailer 9£487 GBP
Retailer 3£582 GBP
Retailer 2£591 GBP
Retailer 8£623 GBP
Retailer 4£705 GBP
Retailer 7£725 GBP
Retailer 5£742 GBP
MOH London£1,115 GBP

38 data points across 9 retailers

20 retailers£452 GBP to £705 GBP

B+
Retailer 1
-
£437 GBP
$585 USD
Price last confirmed 7 days ago
B
Retailer 2
-
£452 GBP
$605 USD
View
Retailer 3
-
£455 GBP
$609 USD
View
Price last confirmed 7 days ago
Retailer 4
-
£470 GBP
$630 USD
View
Price last confirmed 8 days ago
Retailer 5
-
£470 GBP
$630 USD
View
Price last confirmed 7 days ago
B
Retailer 6
-
£487 GBP
$652 USD
View
B
Retailer 7
-
£504 GBP
$675 USD
View
Retailer 8
-
£520 GBP
$697 USD
View
Price last confirmed 7 days ago
B
Retailer 9
-
£533 GBP
$714 USD
View
Retailer 10
-
£576 GBP
$771 USD
View
Price last confirmed 8 days ago
B
Retailer 11
-
£582 GBP
$780 USD
View
Price last confirmed 5 days ago
B
Retailer 12
-
£591 GBP
View
B
Retailer 13
-
£609 GBP
$816 USD
View
C
Retailer 14
-
£670 GBP
$898 USD
View
B
Retailer 15
-
£705 GBP
€900 EUR
View
Retailer 16
-
£725 GBP
A$1,494 AUD
View
Price last confirmed 29 days ago
B
Retailer 17
-
£742 GBP
ZAR 16,063 ZAR
View
Price last confirmed 7 days ago
Most Expensive
MOH London
CC486A0A0 · Oct 26
£1,115 GBP
View
Price under review
17 more retailers have this diamond
Prices start from £452 GBPSave up to £254 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 Emerald
£452 GBP