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Emerald|Natural|GIA

0.50ct J SI2 Emerald Natural Diamond

VG • J/SI2 • GIA 6402378452

Certificate GIA 6402378452

Diamond specifications and retailer prices

From £340 GBP
$455 USD
As of October 28, 2026
Save £418 GBP (55%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £757 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.5ct natural emerald diamond

This 0.5ct natural emerald sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6402378452. Listed at 4 retailers as of October 28, 2026, with prices from £340 to £757, a £418 spread on the same certified stone. MOH London lists it at £757. 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

0.50
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6402378452
Dimensions5.29 × 4.02 × 2.64 mm
L/W Ratio1.32
Top View
5.29 mm4.02 mm0.50 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6402378452
Side View
Table 76.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 65.6%

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 28
Current: £757 GBP|Low: £336 GBP|High: £763 GBP|Avg: £480 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4£340 GBP
Retailer 2£405 GBP
Retailer 5£437 GBP
Retailer 3£496 GBP
MOH London£757 GBP

40 data points across 5 retailers

4 retailers£340 GBP to £757 GBP

B+
Cheapest Retailer
-
£340 GBP
$455 USD
B
Retailer 2
-
£405 GBP
View
B
Retailer 3
-
£496 GBP
€633 EUR
View
Most Expensive
C
MOH London
F39DB731B · Oct 29
£757 GBP
View
3 more retailers have this diamond
Prices start from £340 GBPSave up to £418 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+
0.50ct Emerald
£340 GBP