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Round|Lab Grown|IGI

1.70ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG737547741

Shape and cutting style on the report: Round brilliant

Certificate IGI LG737547741

Diamond specifications and retailer prices

From $370 NZD
$208 USD
As of November 1, 2026
Save $1,994 NZD (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,364 NZD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.7ct lab-grown round diamond

This 1.7ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG737547741 or 737547741. Listed at 17 retailers as of November 1, 2026, with prices from $370 to $2,364, a $1,994 spread on the same certified stone. Brilliant Earth lists it at $2,364. 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

1.70
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737547741
Dimensions7.70 × 7.72 × 4.62 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.70 mm7.72 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737547741
Side View
Table 60.0%Crown 33.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.0%

Caratlytics Score

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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 1
Current: $2,364 NZD|Low: $359 NZD|High: $3,004 NZD|Avg: $1,014 NZD|-21.3%
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 2, 2026
Retailer 7$370 NZD
Retailer 4$412 NZD
Retailer 13$428 NZD
Retailer 3$457 NZD
Retailer 12$457 NZD
Retailer 9$523 NZD
Retailer 6$619 NZD
Retailer 10$841 NZD
Retailer 15$924 NZD
Retailer 16$926 NZD
Retailer 2$967 NZD
Retailer 17$1,470 NZD
Retailer 8$1,475 NZD
Retailer 14$1,475 NZD
Retailer 5$1,565 NZD
Retailer 11$1,833 NZD
Brilliant Earth$2,364 NZD

45 data points across 17 retailers

17 retailers$370 NZD to $2,364 NZD

A
Cheapest Retailer
-
$370 NZD
$208 USD
A
Retailer 2
-
$412 NZD
$232 USD
View
Final sale: no returns
A
Retailer 3
-
$428 NZD
$241 USD
View
Retailer 4
-
$457 NZD
$257 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$457 NZD
$257 USD
View
A
Retailer 6
-
$523 NZD
HK$2,300 HKD
View
B+
Retailer 7
-
$619 NZD
$348 USD
View
A
Retailer 8
-
$841 NZD
£373 GBP
View
A
Retailer 9
-
$924 NZD
$520 USD
View
A
Retailer 10
-
$926 NZD
$521 USD
View
A
Retailer 11
-
$967 NZD
€518 EUR
View
B
Retailer 12
-
$1,470 NZD
$827 USD
View
Retailer 13
-
$1,475 NZD
$830 USD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$1,475 NZD
$830 USD
View
B+
Retailer 15
-
$1,565 NZD
$881 USD
View
B
Retailer 16
-
$1,833 NZD
£812 GBP
View
Most Expensive
B
Brilliant Earth
16145445A · Nov 1
$2,364 NZD
$1,330 USD
View
16 more retailers have this diamond
Prices start from $370 NZDSave up to $1,994 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 Round
$370 NZD