Emerald|Natural|IGI

0.51ct E SI1 Emerald Natural Diamond

EX • E/SI1 • IGI 831669532

Shape and cutting style on the report: Emerald cut

Certificate IGI 831669532

Diamond specifications and retailer prices

From £420 GBP
₹53,130 INR
As of October 29, 2026
Save £594 GBP (59%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,728 GBP at NZ Jewellers · As of October 27, 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 and certified by IGI 831669532. Listed at 15 retailers as of October 29, 2026, with a 142% 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle36.8°
OriginNatural
Grading LabIGI
CertificateIGI 831669532
Dimensions5.50 × 3.77 × 2.44 mm
L/W Ratio1.46
Culet sizeLarge
Top View
5.50 mm3.77 mm0.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 831669532
Side View
Table 68.0%Crown 35.2°Girdle: Slightly ThickPavilion 36.8°Culet: LargeDepth 64.7%

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 29
Current: £1,728 GBP|Low: £417 GBP|High: £1,790 GBP|Avg: £719 GBP|-3.4%
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
October 29, 2026
Retailer 8£420 GBP
Retailer 5£509 GBP
Retailer 12£551 GBP
Retailer 14£551 GBP
Retailer 11£561 GBP
Retailer 13£572 GBP
Retailer 7£580 GBP
Retailer 15£636 GBP
Retailer 3£651 GBP
Retailer 6£660 GBP
Retailer 2£679 GBP
Retailer 9£729 GBP
Retailer 10£848 GBP
Retailer 4£1,014 GBP
NZ Jewellers£1,728 GBP

23 data points across 15 retailers

15 retailers£420 GBP to £1,014 GBP

A
Cheapest Retailer
-
£420 GBP
₹53,130 INR
B+
Retailer 2
-
£509 GBP
$676 USD
View
Final sale: no returns
B+
Retailer 3
-
£551 GBP
$732 USD
View
B+
Retailer 4
-
£551 GBP
$732 USD
View
B+
Retailer 5
-
£561 GBP
$745 USD
View
B+
Retailer 6
-
£572 GBP
$760 USD
View
B+
Retailer 7
-
£580 GBP
$771 USD
View
Price last confirmed 14 days ago
B+
Retailer 8
-
£636 GBP
$845 USD
View
B+
Retailer 9
-
£651 GBP
$864 USD
View
B+
Retailer 10
-
£660 GBP
$877 USD
View
B+
Retailer 11
-
£679 GBP
View
B
Retailer 12
-
£729 GBP
€922 EUR
View
B
Retailer 13
-
£848 GBP
ZAR 18,210 ZAR
View
B
Retailer 14
-
£1,014 GBP
View
Most Expensive
B
NZ Jewellers
60491f8c-62dc-49d1-ba6a-da5b3b1d7c12 · Oct 27
£1,728 GBP
$2,296 USD
View
Price under review
14 more retailers have this diamond
Prices start from £420 GBPSave up to £594 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
£420 GBP