CaratHunter
Plans
Round|Lab Grown|IGI

1.68ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG528206233

Shape and cutting style on the report: Round brilliant

Certificate IGI LG528206233

Diamond specifications and retailer prices

From £213 GBP
$284 USD
As of October 28, 2026
Save £814 GBP (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,027 GBP at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.68ct lab-grown round diamond

This 1.68ct 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 LG528206233 or 528206233. Listed at 16 retailers as of October 28, 2026, with prices from £213 to £1,027, a £814 spread on the same certified stone. Reve Diamonds lists it at £1,027. 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

1.68
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528206233
Dimensions7.64 × 7.59 × 4.71 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.64 mm7.59 mm1.68 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528206233
Side View
Table 56.0%Crown 36.4°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.8%

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 28
Current: £448 GBP|Low: £152 GBP|High: £962 GBP|Avg: £481 GBP|+5.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 8£213 GBP
Retailer 9£393 GBP
Retailer 5£394 GBP
Retailer 6£396 GBP
Retailer 7£440 GBP
Retailer 1£448 GBP
Retailer 3£574 GBP
Retailer 2£728 GBP
Retailer 4£956 GBP

31 data points across 9 retailers

16 retailers£213 GBP to £1,027 GBP

Retailer 1
-
£191 GBP
$255 USD
Price last confirmed 37 days ago
A
Retailer 2
-
£213 GBP
$284 USD
View
Final sale: no returns
Retailer 3
-
£222 GBP
$295 USD
View
Price last confirmed 37 days ago
Retailer 4
-
£234 GBP
$312 USD
View
Price last confirmed 34 days ago
A
Retailer 5
-
£393 GBP
$524 USD
View
B+
Retailer 6
-
£394 GBP
$525 USD
View
A
Retailer 7
-
£396 GBP
$528 USD
View
B+
Retailer 8
-
£440 GBP
$586 USD
View
B+
Retailer 9
-
£448 GBP
View
Retailer 10
-
£574 GBP
$765 USD
View
Price last confirmed 11 days ago
B+
Retailer 11
-
£584 GBP
View
B
Retailer 12
-
£728 GBP
$970 USD
View
Retailer 13
-
£762 GBP
$1,015 USD
View
Price last confirmed 39 days ago
B
Retailer 14
-
£801 GBP
$1,067 USD
View
Retailer 15
-
£956 GBP
View
Price last confirmed 12 days ago
Most Expensive
B
Reve Diamonds
AEEE51C91 · Oct 28
£1,027 GBP
$1,368 USD
View
15 more retailers have this diamond
Prices start from £213 GBPSave up to £814 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
1.68ct Round
£213 GBP