CaratHunter
Plans
Round|Lab Grown|IGI

1.00ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG685511643

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685511643

Diamond specifications and retailer prices

From $182 SGD
$142 USD
As of October 29, 2026
Save $1,109 SGD (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,291 SGD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685511643 or 685511643. Listed at 22 retailers as of October 29, 2026, with prices from $182 to $1,291, a $1,109 spread on the same certified stone. Reve Diamonds lists it at $1,291. 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

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685511643
Dimensions6.47 × 6.44 × 3.90 mm
L/W Ratio1.00
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
6.47 mm6.44 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685511643
Side View
Table 59.0%Crown 34.5°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 60.4%

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: $387 SGD|Low: $134 SGD|High: $1,291 SGD|Avg: $530 SGD|+7.4%
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
Reve Diamonds
October 30, 2026
Retailer 6$182 SGD
Retailer 11$202 SGD
Retailer 12$211 SGD
Retailer 3$226 SGD
Retailer 16$226 SGD
Retailer 14$344 SGD
Retailer 1$387 SGD
Retailer 2$419 SGD
Retailer 10$444 SGD
Retailer 15$538 SGD
Retailer 8$588 SGD
Retailer 4$603 SGD
Retailer 13$613 SGD
Retailer 7$726 SGD
Retailer 5$797 SGD
Retailer 9$1,062 SGD
Reve Diamonds$1,291 SGD

43 data points across 17 retailers

22 retailers$182 SGD to $1,291 SGD

Retailer 1
-
$180 SGD
$141 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$182 SGD
$142 USD
View
A
Retailer 3
-
$202 SGD
$158 USD
View
Final sale: no returns
A
Retailer 4
-
$211 SGD
$165 USD
View
Retailer 5
-
$221 SGD
$173 USD
View
Price last confirmed 38 days ago
A
Retailer 6
-
$226 SGD
$177 USD
View
A
Retailer 7
-
$226 SGD
$177 USD
View
A
Retailer 8
-
$344 SGD
$269 USD
View
A
Retailer 9
-
$387 SGD
£238 GBP
View
B+
Retailer 10
-
$419 SGD
$328 USD
View
B+
Retailer 11
-
$444 SGD
€331 EUR
View
Retailer 12
-
$518 SGD
$405 USD
View
Price last confirmed 88 days ago
B+
Retailer 13
-
$538 SGD
$421 USD
View
B+
Retailer 14
-
$588 SGD
$460 USD
View
B+
Retailer 15
-
$603 SGD
$472 USD
View
B+
Retailer 16
-
$613 SGD
A$738 AUD
View
Retailer 17
-
$688 SGD
$538 USD
View
Price last confirmed 38 days ago
Retailer 18
-
$720 SGD
$563 USD
View
Price last confirmed 39 days ago
B
Retailer 19
-
$726 SGD
$568 USD
View
B
Retailer 20
-
$797 SGD
$623 USD
View
B
Retailer 21
-
$1,062 SGD
£654 GBP
View
Most Expensive
B
Reve Diamonds
FD1186601 · Oct 30
$1,291 SGD
$1,010 USD
View
21 more retailers have this diamond
Prices start from $182 SGDSave up to $1,109 SGD

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
1.00ct Round
$182 SGD