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Radiant|Lab Grown|IGI

1.68ct F IF Radiant Lab Grown Diamond

VG • F/IF • IGI LG816615263

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG816615263

Diamond specifications and retailer prices

From $516 NZD
As of November 4, 2026
Save $4,061 NZD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,577 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.68ct lab-grown radiant diamond

This 1.68ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816615263 or 816615263. Listed at 13 retailers as of November 4, 2026, with prices from $516 to $4,577, a $4,061 spread on the same certified stone. Brilliant Earth lists it at $4,577. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.68
Carat
F
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816615263
Dimensions8.54 × 5.84 × 3.82 mm
L/W Ratio1.46
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
8.54 mm5.84 mm1.68 ctF / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816615263
Side View
Table 63.0%Crown 42.1°Girdle: MediumPavilion 35.6°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,577 NZD|Low: $415 NZD|High: $5,872 NZD|Avg: $2,036 NZD|-22.1%
Brilliant Earth
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
November 5, 2026
Retailer 11$516 NZD
Retailer 17$715 NZD
Retailer 13$779 NZD
Retailer 4$834 NZD
Retailer 7$1,070 NZD
Retailer 3$1,071 NZD
Retailer 6$1,111 NZD
Retailer 16$1,478 NZD
Retailer 12$1,639 NZD
Retailer 14$1,859 NZD
Retailer 8$2,154 NZD
Retailer 9$2,166 NZD
Retailer 15$2,212 NZD
Retailer 10$2,521 NZD
Retailer 2$4,098 NZD
Retailer 5$4,196 NZD
Brilliant Earth$4,577 NZD

22 data points across 17 retailers

13 retailers$516 NZD to $4,577 NZD

A
Cheapest Retailer
-
$516 NZD
Final sale: no returns
A
Retailer 2
-
$715 NZD
View
B+
Retailer 3
-
$779 NZD
View
A
Retailer 4
-
$834 NZD
View
A
Retailer 5
-
$1,071 NZD
View
A
Retailer 6
-
$1,478 NZD
View
B+
Retailer 7
-
$1,639 NZD
View
B+
Retailer 8
-
$1,859 NZD
View
B+
Retailer 9
-
$2,212 NZD
View
B+
Retailer 10
-
$2,521 NZD
View
B
Retailer 11
-
$4,098 NZD
View
Retailer 12
-
$4,196 NZD
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
21730775Y · Nov 4
$4,577 NZD
$2,580 USD
View
12 more retailers have this diamond
Prices start from $516 NZDSave up to $4,061 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 Radiant
$516 NZD