Emerald|Natural|GIA

0.51ct E SI1 Emerald Natural Diamond

EX • E/SI1 • GIA 2566017480

Certificate GIA 2566017480

Diamond specifications and retailer prices

From £495 GBP
$659 USD
As of October 23, 2026
Save £171 GBP (26%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,497 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 0.51ct natural emerald diamond

This 0.51ct natural emerald sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566017480. Listed at 16 retailers as of October 23, 2026, with a 35% 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

0.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566017480
Dimensions5.57 × 3.72 × 2.46 mm
L/W Ratio1.50
Girdle conditionPolished
Top View
5.57 mm3.72 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566017480
Side View
Table 66.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.2%

Caratlytics Score

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

Price History

Last verified: Oct 23
Current: £1,497 GBP|Low: £322 GBP|High: £1,541 GBP|Avg: £660 GBP|-2.9%
NZ Jewellers
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
Retailer 15
Retailer 16
October 23, 2026
Retailer 7£394 GBP
Retailer 11£436 GBP
Retailer 12£475 GBP
Retailer 10£479 GBP
Retailer 5£487 GBP
Retailer 16£495 GBP
Retailer 14£499 GBP
Retailer 13£579 GBP
Retailer 9£612 GBP
Retailer 6£639 GBP
Retailer 2£666 GBP
Retailer 3£696 GBP
Retailer 15£728 GBP
Retailer 8£739 GBP
Retailer 4£1,108 GBP
NZ Jewellers£1,497 GBP

20 data points across 16 retailers

16 retailers£495 GBP to £666 GBP

A
Retailer 1
-
£394 GBP
HK$4,100 HKD
Price last confirmed 7 days ago
A
Retailer 2
-
£475 GBP
$633 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£479 GBP
€608 EUR
View
Price last confirmed 6 days ago
A
Retailer 4
-
£487 GBP
SGD 876 SGD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£495 GBP
$659 USD
View
A
Retailer 6
-
£499 GBP
View
Price last confirmed 7 days ago
B+
Retailer 7
-
£579 GBP
View
Price last confirmed 7 days ago
B+
Retailer 8
-
£612 GBP
$815 USD
View
Price last confirmed 5 days ago
B+
Retailer 9
-
£639 GBP
$850 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£646 GBP
View
Price last confirmed 32 days ago
B+
Retailer 11
-
£666 GBP
€845 EUR
View
B+
Retailer 12
-
£696 GBP
$927 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
£728 GBP
ZAR 15,670 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 14
-
£739 GBP
A$1,513 AUD
View
Price last confirmed 24 days ago
B
Retailer 15
-
£1,108 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
0935f67e-5a7e-4757-bb0e-c6b24f30efcd · Oct 20
£1,497 GBP
$1,993 USD
View
Price under review
15 more retailers have this diamond
Prices start from £495 GBPSave up to £171 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
0.51ct Emerald
£495 GBP