CaratHunter
Plans
Round|Lab Grown|IGI

1.67ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG597391908

Shape and cutting style on the report: Round brilliant

Certificate IGI LG597391908

Diamond specifications and retailer prices

From £149 GBP
$199 USD
As of October 29, 2026
Save £1,285 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,434 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.67ct lab-grown round diamond

This 1.67ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG597391908 or 597391908. Listed at 11 retailers as of October 29, 2026, with prices from £149 to £1,434, a £1,285 spread on the same certified stone. Do Amore Diamonds lists it at £1,434. 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

1.67
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG597391908
Dimensions7.68 × 7.65 × 4.60 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.68 mm7.65 mm1.67 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG597391908
Side View
Table 59.0%Crown 33.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.1%

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: £1,434 GBP|Low: £145 GBP|High: £1,487 GBP|Avg: £549 GBP|-3.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 10£149 GBP
Retailer 3£169 GBP
Retailer 8£173 GBP
Retailer 7£321 GBP
Retailer 4£355 GBP
Retailer 9£570 GBP
Retailer 5£598 GBP
Retailer 6£657 GBP
Retailer 11£713 GBP
Retailer 2£824 GBP
Do Amore Diamonds£1,434 GBP

39 data points across 11 retailers

11 retailers£149 GBP to £1,434 GBP

A
Cheapest Retailer
-
£149 GBP
$199 USD
A
Retailer 2
-
£169 GBP
$225 USD
View
Final sale: no returns
A
Retailer 3
-
£173 GBP
$231 USD
View
B+
Retailer 4
-
£321 GBP
$428 USD
View
A
Retailer 5
-
£355 GBP
View
B+
Retailer 6
-
£570 GBP
$759 USD
View
B+
Retailer 7
-
£598 GBP
$796 USD
View
B+
Retailer 8
-
£657 GBP
$875 USD
View
B
Retailer 9
-
£713 GBP
$950 USD
View
B
Retailer 10
-
£824 GBP
View
Most Expensive
B
Do Amore Diamonds
27-33DBD3C18 · Oct 29
£1,434 GBP
$1,910 USD
View
10 more retailers have this diamond
Prices start from £149 GBPSave up to £1,285 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
1.67ct Round
£149 GBP