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1.68ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG831655335

Shape and cutting style on the report: Round brilliant

Certificate IGI LG831655335

Diamond specifications and retailer prices

From $367 NZD
$206 USD
As of October 29, 2026
Save $1,790 NZD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,157 NZD 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 LG831655335 or 831655335. Listed at 9 retailers as of October 28, 2026, with prices from $367 to $2,157, a $1,790 spread on the same certified stone. Reve Diamonds lists it at $2,157. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831655335
Dimensions7.82 × 7.74 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.82 mm7.74 mm1.68 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831655335
Side View
Table 59.0%Crown 32.9°Girdle: MediumPavilion 40.4°CuletDepth 58.8%

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 29
Current: $788 NZD|Low: $410 NZD|High: $2,157 NZD|Avg: $1,284 NZD|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Reve Diamonds
October 29, 2026
Retailer 4$410 NZD
Retailer 5$782 NZD
Retailer 1$788 NZD
Retailer 3$1,464 NZD
Retailer 2$2,126 NZD
Reve Diamonds$2,157 NZD

26 data points across 6 retailers

9 retailers$367 NZD to $2,157 NZD

A
Cheapest Retailer
-
$367 NZD
$206 USD
A
Retailer 2
-
$410 NZD
$230 USD
View
Final sale: no returns
A
Retailer 3
-
$454 NZD
$255 USD
View
B+
Retailer 4
-
$782 NZD
$439 USD
View
A
Retailer 5
-
$788 NZD
£348 GBP
View
B+
Retailer 6
-
$1,458 NZD
$819 USD
View
B
Retailer 7
-
$1,464 NZD
$822 USD
View
B
Retailer 8
-
$2,126 NZD
£940 GBP
View
Most Expensive
B
Reve Diamonds
212EB783E · Oct 28
$2,157 NZD
$1,211 USD
View
8 more retailers have this diamond
Prices start from $367 NZDSave up to $1,790 NZD

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
$367 NZD