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Radiant|Lab Grown|IGI

1.70ct G IF Radiant Lab Grown Diamond

ID • G/IF • IGI LG581327872

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

Certificate IGI LG581327872

Diamond specifications and retailer prices

From $573 NZD
As of November 4, 2026
Save $3,946 NZD (87%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,518 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.7ct lab-grown radiant diamond

This 1.7ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG581327872 or 581327872. Listed at 20 retailers as of November 4, 2026, with prices from $573 to $4,518, a $3,946 spread on the same certified stone. Brilliant Earth lists it at $4,518. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
G
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.2°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG581327872
Dimensions8.12 × 5.99 × 4.08 mm
L/W Ratio1.36
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 Faint Blue
Top View
8.12 mm5.99 mm1.70 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG581327872
Side View
Table 63.0%Crown 44.2°Girdle: MediumPavilion 36.3°Culet: NoneDepth 68.1%

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: $4,518 NZD|Low: $550 NZD|High: $5,568 NZD|Avg: $1,722 NZD|-18.8%
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
November 5, 2026
Retailer 3$573 NZD
Retailer 6$640 NZD
Retailer 4$710 NZD
Retailer 15$957 NZD
Retailer 13$987 NZD
Retailer 7$1,181 NZD
Retailer 11$1,222 NZD
Retailer 10$1,252 NZD
Retailer 2$1,254 NZD
Retailer 9$1,667 NZD
Retailer 14$1,699 NZD
Retailer 5$2,729 NZD
Retailer 8$2,837 NZD
Retailer 12$3,887 NZD
Brilliant Earth$4,518 NZD

46 data points across 15 retailers

20 retailers$573 NZD to $4,518 NZD

A
Cheapest Retailer
-
$573 NZD
A
Retailer 2
-
$640 NZD
View
Final sale: no returns
A
Retailer 3
-
$664 NZD
View
Retailer 4
-
$710 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$710 NZD
View
A
Retailer 6
-
$957 NZD
View
A
Retailer 7
-
$987 NZD
View
A
Retailer 8
-
$1,181 NZD
View
A
Retailer 9
-
$1,222 NZD
View
A
Retailer 10
-
$1,252 NZD
View
A
Retailer 11
-
$1,254 NZD
View
A
Retailer 12
-
$1,667 NZD
View
B+
Retailer 13
-
$1,699 NZD
View
B+
Retailer 14
-
$2,033 NZD
View
B+
Retailer 15
-
$2,281 NZD
View
B+
Retailer 16
-
$2,361 NZD
View
B
Retailer 17
-
$2,729 NZD
View
B+
Retailer 18
-
$2,837 NZD
View
Retailer 19
-
$3,887 NZD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21312144A · Nov 4
$4,518 NZD
$2,540 USD
View
19 more retailers have this diamond
Prices start from $573 NZDSave up to $3,946 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
1.70ct Radiant
$573 NZD