Emerald|Natural|GIA

0.40ct G SI1 Emerald Natural Diamond

EX • G/SI1 • GIA 1508906347

Certificate GIA 1508906347

Diamond specifications and retailer prices

From £182 GBP
HK$1,900 HKD
As of October 30, 2026
Save £373 GBP (67%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £915 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 0.4ct natural emerald diamond

This 0.4ct natural emerald sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1508906347. Listed at 16 retailers as of October 29, 2026, with a 205% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.40
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1508906347
Dimensions5.15 × 3.49 × 2.31 mm
L/W Ratio1.48
Girdle conditionPolished
Key to symbols
Feather
Top View
5.15 mm3.49 mm0.40 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1508906347
Side View
Table 70.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £307 GBP|Low: £182 GBP|High: £558 GBP|Avg: £343 GBP|+7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 9£182 GBP
Retailer 5£251 GBP
Retailer 4£257 GBP
Retailer 12£275 GBP
Retailer 1£307 GBP
Retailer 3£322 GBP
Retailer 2£346 GBP
Retailer 13£364 GBP
Retailer 6£370 GBP
Retailer 11£382 GBP
Retailer 10£403 GBP
Retailer 8£447 GBP
Retailer 7£554 GBP

44 data points across 13 retailers

16 retailers£182 GBP to £554 GBP

A
Cheapest Retailer
-
£182 GBP
HK$1,900 HKD
Retailer 2
-
£239 GBP
$320 USD
View
Price last confirmed 23 days ago
A
Retailer 3
-
£251 GBP
SGD 455 SGD
View
Retailer 4
-
£257 GBP
$345 USD
View
Price last confirmed 19 days ago
Retailer 5
-
£266 GBP
$357 USD
View
Price last confirmed 31 days ago
B+
Retailer 6
-
£275 GBP
$369 USD
View
B+
Retailer 7
-
£307 GBP
View
Retailer 8
-
£322 GBP
$431 USD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
£346 GBP
$464 USD
View
B
Retailer 10
-
£364 GBP
$488 USD
View
B+
Retailer 11
-
£370 GBP
ZAR 8,013 ZAR
View
Retailer 12
-
£382 GBP
A$788 AUD
View
Price last confirmed 27 days ago
B
Retailer 13
-
£403 GBP
$540 USD
View
B
Retailer 14
-
£447 GBP
€571 EUR
View
B
Retailer 15
-
£554 GBP
View
Most Expensive
NZ Jewellers
1c56b9f1-80c8-40fa-bd81-04f9d2b403f9 · Sep 30
£915 GBP
$1,226 USD
View
Price under review
15 more retailers have this diamond
Prices start from £182 GBPSave up to £373 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.

A
0.40ct Emerald
£182 GBP