CaratHunter
Plans
Round|Lab Grown|IGI

1.43ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG770641607

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770641607

Diamond specifications and retailer prices

From £167 GBP
$224 USD
As of October 29, 2026
Save £781 GBP (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £949 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.43ct lab-grown round diamond

This 1.43ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770641607 or 770641607. Listed at 22 retailers as of October 29, 2026, with prices from £167 to £949, a £781 spread on the same certified stone. Reve Diamonds lists it at £949. 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

1.43
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770641607
Dimensions7.23 × 7.16 × 4.46 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
7.23 mm7.16 mm1.43 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770641607
Side View
Table 56.0%Crown 35.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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: £386 GBP|Low: £166 GBP|High: £949 GBP|Avg: £433 GBP|+5.5%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Reve Diamonds
October 31, 2026
Retailer 8£167 GBP
Retailer 13£187 GBP
Retailer 16£194 GBP
Retailer 3£207 GBP
Retailer 4£207 GBP
Retailer 5£353 GBP
Retailer 17£381 GBP
Retailer 1£386 GBP
Retailer 15£393 GBP
Retailer 2£394 GBP
Retailer 12£405 GBP
Retailer 11£421 GBP
Retailer 18£440 GBP
Retailer 6£567 GBP
Retailer 9£667 GBP
Retailer 7£706 GBP
Retailer 10£746 GBP
Retailer 14£836 GBP
Reve Diamonds£949 GBP

34 data points across 19 retailers

22 retailers£167 GBP to £949 GBP

Retailer 1
-
£166 GBP
$222 USD
Price last confirmed 39 days ago
A
Retailer 2
-
£167 GBP
$224 USD
View
A
Retailer 3
-
£187 GBP
$251 USD
View
Final sale: no returns
A
Retailer 4
-
£194 GBP
$260 USD
View
Retailer 5
-
£203 GBP
$272 USD
View
Price last confirmed 39 days ago
A
Retailer 6
-
£207 GBP
$278 USD
View
A
Retailer 7
-
£207 GBP
$278 USD
View
B+
Retailer 8
-
£353 GBP
$473 USD
View
B+
Retailer 9
-
£381 GBP
$511 USD
View
B+
Retailer 10
-
£386 GBP
View
B+
Retailer 11
-
£393 GBP
€501 EUR
View
B+
Retailer 12
-
£394 GBP
$528 USD
View
B+
Retailer 13
-
£405 GBP
View
B+
Retailer 14
-
£421 GBP
A$868 AUD
View
B+
Retailer 15
-
£440 GBP
$590 USD
View
B
Retailer 16
-
£567 GBP
$760 USD
View
Retailer 17
-
£661 GBP
$886 USD
View
Price last confirmed 40 days ago
B
Retailer 18
-
£667 GBP
$894 USD
View
B
Retailer 19
-
£706 GBP
$947 USD
View
B
Retailer 20
-
£746 GBP
$1,000 USD
View
B
Retailer 21
-
£836 GBP
View
Most Expensive
B
Reve Diamonds
9E01CE85A · Oct 30
£949 GBP
$1,271 USD
View
21 more retailers have this diamond
Prices start from £167 GBPSave up to £781 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
1.43ct Round
£167 GBP